arista.eos.eos_config module – Manage Arista EOS configuration sections

Note

This module is part of the arista.eos collection (version 7.0.0).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install arista.eos.

To use it in a playbook, specify: arista.eos.eos_config.

New in arista.eos 1.0.0

Synopsis

  • Arista EOS configurations use a simple block indent file syntax for segmenting configuration into sections. This module provides an implementation for working with EOS configuration sections in a deterministic way. This module works with either CLI or eAPI transports.

Aliases: config

Parameters

Parameter

Comments

after

list / elements=string

The ordered set of commands to append to the end of the command stack if a change needs to be made. Just like with before this allows the playbook designer to append a set of commands to be executed after the command set.

backup

boolean

This argument will cause the module to create a full backup of the current running-config from the remote device before any changes are made. If the backup_options value is not given, the backup file is written to the backup folder in the playbook root directory or role root directory, if playbook is part of an ansible role. If the directory does not exist, it is created.

Choices:

  • false ← (default)

  • true

backup_options

dictionary

This is a dict object containing configurable options related to backup file path. The value of this option is read only when backup is set to true, if backup is set to no this option will be silently ignored.

dir_path

path

This option provides the path ending with directory name in which the backup configuration file will be stored. If the directory does not exist it will be first created and the filename is either the value of filename or default filename as described in filename options description. If the path value is not given in that case a backup directory will be created in the current working directory and backup configuration will be copied in filename within backup directory.

filename

string

The filename to be used to store the backup configuration. If the filename is not given it will be generated based on the hostname, current time and date in format defined by <hostname>_config.<current-date>@<current-time>

before

list / elements=string

The ordered set of commands to push on to the command stack if a change needs to be made. This allows the playbook designer the opportunity to perform configuration commands prior to pushing any changes without affecting how the set of commands are matched against the system.

defaults

boolean

The defaults argument will influence how the running-config is collected from the device. When the value is set to true, the command used to collect the running-config is append with the all keyword. When the value is set to false, the command is issued without the all keyword

Choices:

  • false ← (default)

  • true

diff_against

string

When using the ansible-playbook --diff command line argument the module can generate diffs against different sources.

When this option is configure as startup, the module will return the diff of the running-config against the startup-config.

When this option is configured as intended, the module will return the diff of the running-config against the configuration provided in the intended_config argument.

When this option is configured as running, the module will return the before and after diff of the running-config with respect to any changes made to the device configuration.

When this option is configured as session, the diff returned will be based on the configuration session.

When this option is configured as validate_config, the module will return before with the running-config before applying the intended config and after with the session config after applying the intended config to the session.

Choices:

  • "startup"

  • "running"

  • "intended"

  • "session" ← (default)

  • "validate_config"

diff_ignore_lines

list / elements=string

Use this argument to specify one or more lines that should be ignored during the diff. This is used for lines in the configuration that are automatically updated by the system. This argument takes a list of regular expressions or exact line matches.

intended_config

string

The intended_config provides the master configuration that the node should conform to and is used to check the final running-config against. This argument will not modify any settings on the remote device and is strictly used to check the compliance of the current device’s configuration against. When specifying this argument, the task should also modify the diff_against value and set it to intended. The configuration lines for this value should be similar to how it will appear if present in the running-configuration of the device including the indentation to ensure correct diff.

lines

aliases: commands

list / elements=string

The ordered set of commands that should be configured in the section. The commands must be the exact same commands as found in the device running-config as found in the device running-config to ensure idempotency and correct diff. Be sure to note the configuration command syntax as some commands are automatically modified by the device config parser.

match

string

Instructs the module on the way to perform the matching of the set of commands against the current device config. If match is set to line, commands are matched line by line. If match is set to strict, command lines are matched with respect to position. If match is set to exact, command lines must be an equal match. Finally, if match is set to none, the module will not attempt to compare the source configuration with the running configuration on the remote device.

Choices:

  • "line" ← (default)

  • "strict"

  • "exact"

  • "none"

parents

list / elements=string

The ordered set of parents that uniquely identify the section or hierarchy the commands should be checked against. If the parents argument is omitted, the commands are checked against the set of top level or global commands.

replace

string

Instructs the module on the way to perform the configuration on the device. If the replace argument is set to line then the modified lines are pushed to the device in configuration mode. If the replace argument is set to block then the entire command block is pushed to the device in configuration mode if any line is not correct.

Choices:

  • "line" ← (default)

  • "block"

  • "config"

running_config

aliases: config

string

The module, by default, will connect to the remote device and retrieve the current running-config to use as a base for comparing against the contents of source. There are times when it is not desirable to have the task get the current running-config for every task in a playbook. The running_config argument allows the implementer to pass in the configuration to use as the base config for this module. The configuration lines for this option should be similar to how it will appear if present in the running-configuration of the device including the indentation to ensure idempotency and correct diff.

save_when

string

When changes are made to the device running-configuration, the changes are not copied to non-volatile storage by default. Using this argument will change that before. If the argument is set to always, then the running-config will always be copied to the startup-config and the modified flag will always be set to True. If the argument is set to modified, then the running-config will only be copied to the startup-config if it has changed since the last save to startup-config. If the argument is set to never, the running-config will never be copied to the startup-config. If the argument is set to changed, then the running-config will only be copied to the startup-config if the task has made a change. changed was added in Ansible 2.5.

Choices:

  • "always"

  • "never" ← (default)

  • "modified"

  • "changed"

src

path

The src argument provides a path to the configuration file to load into the remote system. The path can either be a full system path to the configuration file if the value starts with / or relative to the root of the implemented role or playbook. This argument is mutually exclusive with the lines and parents arguments. It can be a Jinja2 template as well. The configuration lines in the source file should be similar to how it will appear if present in the running-configuration (live switch config) of the device i ncluding the indentation to ensure idempotency and correct diff. Arista EOS device config has 3 spaces indentation.

Notes

Note

  • Tested against Arista EOS 4.24.6F

  • Abbreviated commands are NOT idempotent, see Network FAQ.

  • To ensure idempotency and correct diff the configuration lines in the relevant module options should be similar to how they appear if present in the running configuration on device including the indentation.

Examples

- name: configure top level settings
  arista.eos.eos_config:
    lines: hostname {{ inventory_hostname }}

- name: load an acl into the device
  arista.eos.eos_config:
    lines:
      - 10 permit ip host 192.0.2.1 any log
      - 20 permit ip host 192.0.2.2 any log
      - 30 permit ip host 192.0.2.3 any log
      - 40 permit ip host 192.0.2.4 any log
    parents: ip access-list test
    before: no ip access-list test
    replace: block

- name: load configuration from file
  arista.eos.eos_config:
    src: eos.cfg

- name: render a Jinja2 template onto an Arista switch
  arista.eos.eos_config:
    backup: true
    src: eos_template.j2

- name: diff the running config against a master config
  arista.eos.eos_config:
    diff_against: intended
    intended_config: "{{ lookup('file', 'master.cfg') }}"

- name: for idempotency, use full-form commands
  arista.eos.eos_config:
    lines:
      - shutdown
    parents: interface Ethernet1

- name: configurable backup path
  arista.eos.eos_config:
    src: eos_template.j2
    backup: true
    backup_options:
      filename: backup.cfg
      dir_path: /home/user

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key

Description

backup_path

string

The full path to the backup file

Returned: when backup is true

Sample: "/playbooks/ansible/backup/eos_config.2016-07-16@22:28:34"

commands

list / elements=string

The set of commands that will be pushed to the remote device

Returned: always

Sample: ["hostname switch01", "interface Ethernet1", "no shutdown"]

date

string

The date extracted from the backup file name

Returned: when backup is true

Sample: "2016-07-16"

filename

string

The name of the backup file

Returned: when backup is true and filename is not specified in backup options

Sample: "eos_config.2016-07-16@22:28:34"

shortname

string

The full path to the backup file excluding the timestamp

Returned: when backup is true and filename is not specified in backup options

Sample: "/playbooks/ansible/backup/eos_config"

time

string

The time extracted from the backup file name

Returned: when backup is true

Sample: "22:28:34"

updates

list / elements=string

The set of commands that will be pushed to the remote device

Returned: always

Sample: ["hostname switch01", "interface Ethernet1", "no shutdown"]

Authors

  • Peter Sprygada (@privateip)